I feel like this week just flew by — maybe it's the five hours of The Bachelor I consumed between Monday and Tuesday (I swear
that show is a black hole for productivity) or maybe it was running around to get ready for our trip this weekend.
Not exact matches
@Vic: «but I can tell you that things like the Big Bang, the Multiverse, etc.
are theories at best, and the Theory of General Relativity and Quantum Mechanics
are in a direct collision course when it comes to the
Black Holes, and Gravity
is the
show stopper for a Unified Field Theory, and so on and so forth.»
If what you infer as
being a truth then, «Why in many photos of varying spatial places regarding
black holes are there opposing streams
shown spewing forth»?
In fiber optic communications they
show up as measurable noise, they
are observed streaming out of
black holes,...
HIT THE GAS Jets from supermassive
black holes, like the one
shown in this artist's illustration, could
be ultimately responsible for three different types of enigmatic high - energy particles.
A new paper
shows how the possibility of wormholes linking quantum - entangled
black holes could
be tested in the laboratory.
Although we tend to think of
black holes as monstrous devourers of matter, astrophysicist Caleb Scharf uses recent astronomical observations to
show that they
are the universe's most efficient generators of energy and actually sculpt the shape of every galaxy.
Back in 1974, Stephen Hawking, along with Jacob Bekenstein of the Hebrew University in Jerusalem, Israel, famously
showed that
black holes are not entirely
black.
[This article has
been updated from how it originally appeared in print, in light of new data that
shows that the gas cloud's closest approach to the
black hole will
be later than previously predicted.
The researchers found that relatively cool accretion discs around young stars, whose inner edges can
be several times the size of the Sun,
show the same behaviour as the hot, violent accretion discs around planet - sized white dwarfs, city - sized
black holes and supermassive
black holes as large as the entire Solar system, supporting the universality of accretion physics.
The study, «Accretion - induced variability links young stellar objects, white dwarfs, and
black holes», which
is published in the journal Science Advances,
shows how the «flickering» in the visible brightness of young stellar objects (YSOs)-- very young stars in the final stages of formation —
is similar to the flickering seen from
black holes or white dwarfs as they violently pull matter from their surroundings in a process known as accretion.
BUSIER THAN IT LOOKS The center of the Milky Way,
shown in this photograph from the Paranal Observatory in Chile, may
be swarming with thousands of small
black holes.
It all began in the mid-1970s, when Stephen Hawking of the University of Cambridge
showed theoretically that
black holes are not truly
black, but emit radiation.
The team's simulations
show that 70 to 98 % of the middleweight
black holes at the hearts of clusters
were ejected, depending on the assumptions used, such as the mass of the small
black holes and the initial mass of the middleweight
black hole.
Images of M32, a dwarf elliptical galaxy near to our own,
show that stars become clustered much more closely together near its centre, which
is what should happen if the galaxy contains a
black hole.
Simple physics calculations
show that the strange brawny object
is so tiny, it can
be only one thing: a
black hole.
Observations of stellar motion
show that there
is a supermassive
black hole at its core.
Merritt's calculations
show that, no matter how rapidly the bigger
black hole is spinning initially, its orientation should
be substantially changed.
The results
show the master of
black holes as he has never
been seen before.
In some cases stars
are found to
be orbiting an invisible partner, and if calculations
show that partner has more than a certain mass, it
is probably a
black hole.
For instance, some have suggested that charged, fast - spinning
black holes might
be persuaded to reveal their singularities — and others have
shown that this wouldn't work.
As Einstein
showed, gravity
is just the warping of spacetime, and
black holes are big spacetime sinks.
One
shows a glow from the galactic centre that may
be caused by particles of dark matter colliding and then annihilating around the
black hole there.
This artist's rendering
shows the tidal disruption event named ASASSN - 14li, where a star wandering too close to a 3 - million - solar - mass
black hole was torn apart.
Stephen has made some of the biggest breakthroughs in this area,
showing that quantum effects can allow
black holes to emit radiation, so
black holes are actually gray.
Hamilton's first, simple movies
were broad and cartoonish, but they served their purpose:
showing how different kinds of
black holes might look as you approached them from the outside and then ventured in.
Physics legend Roger Penrose had
been the first person to
show that something bizarre must happen at that inner horizon, because all the matter and energy falling into a
black hole piles up there.
A
black hole 3.8 billion light - years from Earth
is shown in this artist's representation tearing apart a star that drifted within its gravitational pull.
Then he incorporated existing solutions to Einstein's equations to produce
black hole simulations that «could
show what it actually would look like if you
were there.»
It
was 1996, and Hamilton had asked some of his students to make a
black hole show for the university's Fiske Planetarium.
The ergosphere, where all matter and light must follow the
black hole's spin,
is shown in teal.
These new observations with ESO's VLT have
shown that the cloud appears to have survived its close encounter with the
black hole and remains a compact object that
is not significantly extended.
The images of infrared light coming from glowing hydrogen
show that the cloud
was compact both before and after its closest approach, as it swung around the
black hole.
«Our results
show that there
are theories of gravity in which
black holes can masquerade as Einsteinian, so new techniques of analyzing EHT data may
be needed to tell them apart,» remarks Luciano Rezzolla, professor at Goethe University and leader of the Frankfurt team.
Stephen Hawking
showed in the early 1970s that
black holes are not completely
black.
Fermi has
shown that much of this light arises from unresolved gamma - ray sources, particularly galaxies called blazars, which
are powered by material falling toward gigantic
black holes.
Hawking
showed that the gravitational energy of the
black hole could
be lent to virtual particles near the event horizon.
The massive
black hole shown at left in this drawing
is able to rapidly grow as intense radiation from a galaxy nearby shuts down star - formation in its host galaxy.
Team leader Mauri Valtonen of the University of Turku in Finland used equations derived from Einstein's theory of general relativity to
show that the pulses could
be caused by a small, orbiting
black hole plunging into the debris disk around the larger one, situated at one end of the orbital ellipse.
Theoretical physicist Kip Thorne of the California Institute of Technology in Pasadena, who came up with the original idea for the movie, worked closely with the London - based special effects company Double Negative to ensure that the wormhole and
black hole shown were as realistic as possible.
But the high - energy radiation from the source has
shown no sign of dying down, which suggests that astronomers may have caught a star in the process of
being ripped to shreds by a
black hole.
More than a decade ago, Mathur used the principles of string theory to
show that
black holes are actually tangled - up balls of cosmic strings.
In a new study, the scientists
show their theoretical predictions last year
were correct: The historic merger of two massive
black holes detected Sept. 14, 2015, could easily have
been formed through dynamic interactions in the star - dense core of an old globular cluster.
The model also
shows where in the universe the binary
black holes are, how long ago they merged and the masses of each
black hole.
The large - scale structure
is shown in blue and quasars
are marked in white with the rotation axes of their
black holes indicated with a line.
As x-ray astronomers report in the current issue of Astrophysical Journal Letters, the intensity of one particular x-ray wavelength may
show how fast a
black hole is devouring matter from its surroundings: the weaker the x-rays, the more voracious the
hole.
The observations by the Breakthrough Listen team at UC Berkeley using the Robert C. Byrd Green Bank Telescope in West Virginia
show that the fast radio bursts from this object, called FRB 121102,
are nearly 100 percent linearly polarized, an indication that the source of the bursts
is embedded in strong magnetic fields like those around a massive
black hole.
The inset
shows the MgII line, which played a crucial role in determining the mass of the
black hole and
was obtained using GNIRS.
And earlier this year, astronomers
showed that the early, distant universe
is missing the glow of x-ray light that would
be expected from a multitude of small
black holes — another sign favoring the sudden birth of big seeds that go on to
be supermassive
black holes.
TOO BIG, TOO SOON Supermassive
black holes that
are actively feeding on gas and dust, like the one
shown in this artist's rendition, have
been spotted in the early universe — before they should have had time to grow.